When you see how Battlefield 2042 will support up to 128 players on current platforms, your friends on all platforms will want to play together, no matter where you all play from. And ideally, EA publishers and developers DICE and Ripple Effect Studios would do well with the largest possible player base. The Battlefield series has historically not included cross-platform play before, but with the growth of crossplay as a trend in the last few years, it would be wise for the franchise to compete with those like Call of Duty on this front.
While DICE and EA were elusive in their revelations of Battlefield 2042 on features for various platforms, EA did revealed via FAQ that crossplay will actually work. However, Crossplay is still in the testing phase, and yet some platforms will not be able to interact with each other – for obvious reasons.
PlayStation 4 and Xbox One players will play across platforms, but it will be a separate pool from PC, PlayStation 5 and Xbox Series X / S players. While players on the current and new platforms can experience up to 128 players in a game, PS4 servers and Xbox One will only have a maximum of 64 players, so separate servers are needed.
Prior to the full release of Battlefield 2042, playing on various platforms will be part of Technical Playtest as part of a “broader group for invites only”. The most frequently asked questions also clarify that players can opt out of cross-playing on a PC / console.